Improvement in rotary steam-engines



PATENT omen.

CHARLES INMAN, OF HOPE, MICHIGAN.

IMPROVEMENT IN ROTARY STEAM-ENGINES.

Specification forming part of Letters Patent No. 136,164, dated February 25, 1873.

has a more direct application to the rotat ing center or cylinder, and the mechanism made to operate with regularity and reduction of friction, as hereinafter described and shown. 7

In the drawing, Figure 1 is a face view of my improved engine with the face-plate of the rotating part removed to show the inside; Fig. 2, a view of the opposite side of the engine from that shown in Fig. 1, the steam-pipes and frame-work being removed;

Fig. 3, a front elevation of the engine with the.

shaft-standard broken away, more clearly to show the working parts, one of the slides which operate the cut-offs being removed; Fig. 4, a sectional elevation of the engine; Fig. 5, a plan View of the. rock-shaft. Fig. 6 shows a side view of one of the internal cutofl's and the packing-plate thereon.

A represents theexternal rim of the engine, which is provided with a recess, 0, on its periphery for the convenience of attaching the "steam-pipes F H I J, and providing room in the flanges, at the sides of the re cess, for cam-grooves B B, for giving reciprocating movement to slides P P. Rabbets W, Figs. 1 and 4, are formed in the inner angles of the rim A to receive a face-plate, Q, on one side, and a face-plate, Q, on the other side. Between the plates Q Q is placed a disk, V, to which the plates Q Q are fasten ed by bolts X X, &c., Figs. 1, 2, and 3, thus holding the rim A and the rotating parts Q Q V together, in position to receive steam. Reciprocating guides P P on the back of the engine are provided with suitable guides M to operate in, said guides being fastened to the plate Q. To prevent the slides P from springing to one side when passing the cams in grooves B, braces N N are fastened to the guides M, and extend outwardly against the roller-supports R, thus preventing any springing ofthe parts so as to cause a jar. The position of one of the frictionrollers running in the cam-grooves B is shown at T, Fig. 4, all of the rollers being constructed and arranged to operate in the same man ner by pivots put through slides P and into rollersupports B, and held in place by means of screws S, which pass through the roller-supports B into the slides P. The opposite ends of these slides are fastened, by screws n, to internal cut-offs 'n at m, so that as the slides P are moved the cut-offs will also be moved with them. Openings 0 O are made through the shaft-cylinder to enable the cut-offs n n to operate; and the plates Q Q are notched out on their inner peripheries for the same purpose-that is, to give room. On the inner periphery of the rim A are formed cut-offs t t, provided with suitable packing r, Fig. 1, which form steamtight joints against the periphery of the shaft-cylinder V. The cut-ofl's n 72. extend outwardly from the cylinder V to the internal periphery of the rim A, and form steam-tight joints against it. 1) represents a rock-shaft, which is hung in bearings h put through standards 9 g, and which supports arms a a, which operate the cut-offs X X, and an arm, (2, which is operated by a camgroove, U, in such a manner as to give the proper movement to the arms a a to open and close the 'cut-ofis X at the time the cutoffs n n are passing the projecting packing r t, Fig. 1, thereby using no steam while the cut-ofl's n are passing from exhaust K to induction-ports L.

' Operation.

while at the same time the rock-shaft]; is put in motion by camgroove U.

slides P provided with rollers T, cam-grooves B, braces i N, cut-offs r t, rim A, plates Q Q,

and disk V, constructed and arranged to operate, as set forth.

CHARLES INMAN.

Witnesses:

WILLIAM MILLs, GEORGE FRASER. 

